T. D. A. COCKERELL. Ql 



5. Hair of thorax in front fulvous; species of West Indies, ratlier small, abdo- 



men with two fulvous hair bands, and rudiments of a third. 



iVI. trifasciata Cress. 



Hair of thorax in front not fulvous, but pale cinereous, at nx^st with a slight 



yellowish tint 6. 



6. Fifth abdominal segment with a patch of white tomeutuni on each side ; light 



bauds on abdominal segments 2 and 3 basal 7. 



Fifth abdominal segment without a patch of white tomentum on each side, 

 though sometimes a tuft of light hairs 8. 



7. Species of United States Florilegiis coiidigna (Cress.). 



Species of Cuba; much brown-black hair on hind margin of scutelluni, but 



postscutellum with abundant, long, creamy-white hair; tegulfe redder 

 than in condigna, and much reddish on abdomen. 



Florilegiis laiiieri (Cxuer.). 

 (Both condigna and lanieri have metallic tints on the abdomen in 9 . green 

 and crimson. If both occurred in the United States, I should think con- 

 digna a vai'iety or race of lanieri.) 



8. Abdomen with only one hair band, this cream color, very well defined, on 



second segment (Arizona) MelisNodes epichariiia Ckll. 



Not so ; more than one band 9. 



9. Hair bands of abdomen pale fulvous ; size medium 91. gilensis Ckll. 



Hair bands of abdomen white 10. 



10. Larger (but not so large as gilensis) ; hair on outer side of hind tibise and farsi 



yellowish; apical margins of second and third abd. segments bare; 

 second segment with a median linear white band. 



H. coiniuiinis Cress. 

 (M. horfivagans Ckll., var. a, from Kansas, runs to communis, but is more ro- 

 bust, with a much broader abdomen, and moie space between the sides 

 of black patch on mesothorax and tegula;.) 

 Smaller; hair on outer side of hind tibife and tarsi white; quite small spe- 

 cies 11. 



11. Hind margins of second and third abd. s. covered with pubescence; scopa on 



bind legs comparatively short ; abdomen between the bands very shin- 

 ing M. sphteralcese Ckll. 



Hind margins of second and third abd. s. bare ; scopa of hind legs very long. 



M. hnniilior Ckll. 

 {M. pecoselld, var. verbesinarum Ckll., with hair of b. j. within fuscous, may 

 perhaps be looked for here, but it has the abdominal bands, etc., as in 

 31. pallidiciiicta. ) 



Note — Somewhere here conies M. fimbriata Cress, from the de- 

 scription (I have seen only the male), though Cresson mentions no 

 black hair on vertex. It has nervures black ; legs with fulvous 

 pubescence; length slightly over 11 mm. Cresson says allied to 

 rivalis. 



TRANS. AM. ENT. SOC. XXXII. JANUARY, 1906. 



